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PCAL9535AHF,128
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PCAL9535AHF,128

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: GPIO Expander
  • Characteristics:
    • High-speed I2C-bus interface
    • 16-bit general-purpose input/output (GPIO) expander
    • Low standby current consumption
    • Wide operating voltage range
  • Package: QFN (Quad Flat No-leads)
  • Essence: The PCAL9535AHF,128 is a versatile GPIO expander IC that provides additional input/output pins for microcontrollers or other digital devices.
  • Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.

Specifications

  • Operating Voltage Range: 1.65V to 5.5V
  • I2C-bus Interface: Fast-mode Plus (Fm+), up to 1 MHz
  • Number of GPIO Pins: 16
  • Interrupt Output Pin: 1
  • Standby Current Consumption: 1 µA (typical)

Detailed Pin Configuration

The PCAL9535AHF,128 features a 20-pin QFN package with the following pin configuration:

  1. SDA - I2C-bus Serial Data Input/Output
  2. SCL - I2C-bus Serial Clock Input
  3. RESET - Active-Low Reset Input
  4. INT - Interrupt Output
  5. P00 - General-Purpose I/O Pin 0
  6. P01 - General-Purpose I/O Pin 1
  7. P02 - General-Purpose I/O Pin 2
  8. P03 - General-Purpose I/O Pin 3
  9. P04 - General-Purpose I/O Pin 4
  10. P05 - General-Purpose I/O Pin 5
  11. P06 - General-Purpose I/O Pin 6
  12. P07 - General-Purpose I/O Pin 7
  13. P10 - General-Purpose I/O Pin 8
  14. P11 - General-Purpose I/O Pin 9
  15. P12 - General-Purpose I/O Pin 10
  16. P13 - General-Purpose I/O Pin 11
  17. P14 - General-Purpose I/O Pin 12
  18. P15 - General-Purpose I/O Pin 13
  19. VCC - Supply Voltage
  20. GND - Ground

Functional Features

  • Provides additional GPIO pins for microcontrollers or digital devices.
  • High-speed I2C-bus interface allows fast communication with the host device.
  • Supports interrupt functionality to notify the host device of input changes.
  • Low standby current consumption ensures energy efficiency.

Advantages and Disadvantages

Advantages: - Versatile GPIO expander solution. - Wide operating voltage range allows compatibility with various systems. - Fast-mode Plus I2C-bus interface enables high-speed communication. - Low standby current consumption minimizes power usage.

Disadvantages: - Limited number of GPIO pins (16) may not be sufficient for complex applications requiring a higher number of I/Os. - QFN package may require specialized soldering techniques.

Working Principles

The PCAL9535AHF,128 operates as a GPIO expander by communicating with a microcontroller or digital device through the I2C-bus interface. The host device can control the state (input/output) of each GPIO pin and read their values. The IC also supports interrupt functionality, allowing the host device to receive notifications when the input states change.

Detailed Application Field Plans

The PCAL9535AHF,128 finds applications in various fields, including:

  1. Industrial automation
  2. Consumer electronics
  3. Internet of Things (IoT) devices
  4. Robotics
  5. Automotive systems

Detailed and Complete Alternative Models

  1. PCAL9535AHF,118
  2. PCAL9535AHF,328
  3. PCA9535APW,118
  4. PCA9535APW,328
  5. PCA9535DBR,118

These alternative models offer similar functionality and can be considered as alternatives to the PCAL9535AHF,128.

Word count: 446 words

기술 솔루션에 PCAL9535AHF,128 적용과 관련된 10가지 일반적인 질문과 답변을 나열하세요.

Sure! Here are 10 common questions and answers related to the application of PCAL9535AHF,128 in technical solutions:

  1. Q: What is PCAL9535AHF,128? A: PCAL9535AHF,128 is a 16-bit I/O expander with interrupt output and an I2C-bus/SMBus interface. It provides general-purpose remote I/O expansion for most microcontroller families.

  2. Q: What is the maximum voltage that PCAL9535AHF,128 can handle? A: PCAL9535AHF,128 can handle a maximum voltage of 5.5V.

  3. Q: How many I/O pins does PCAL9535AHF,128 have? A: PCAL9535AHF,128 has 16 I/O pins that can be configured as inputs or outputs.

  4. Q: Can PCAL9535AHF,128 be used with both 3.3V and 5V microcontrollers? A: Yes, PCAL9535AHF,128 is compatible with both 3.3V and 5V microcontrollers.

  5. Q: Does PCAL9535AHF,128 support interrupt functionality? A: Yes, PCAL9535AHF,128 has an interrupt output pin that can be used to notify the microcontroller about changes in input states.

  6. Q: Can PCAL9535AHF,128 be cascaded with other I/O expanders? A: Yes, PCAL9535AHF,128 supports cascading multiple devices on the same I2C bus, allowing for even more I/O expansion.

  7. Q: What is the maximum frequency supported by the I2C-bus/SMBus interface? A: PCAL9535AHF,128 supports a maximum frequency of 400kHz for the I2C-bus/SMBus interface.

  8. Q: Can PCAL9535AHF,128 be used in automotive applications? A: Yes, PCAL9535AHF,128 is qualified for automotive applications and can operate in a wide temperature range.

  9. Q: Does PCAL9535AHF,128 have built-in pull-up resistors? A: Yes, PCAL9535AHF,128 has programmable internal pull-up resistors that can be enabled or disabled as needed.

  10. Q: What are some typical applications of PCAL9535AHF,128? A: PCAL9535AHF,128 is commonly used in various applications such as industrial automation, home automation, consumer electronics, and automotive systems for I/O expansion and control purposes.

Please note that the answers provided here are general and may vary depending on the specific implementation and requirements of your technical solution.